53213281 divided by 42 
We're looking to find how many times 42 goes into 53213281.

Advancing to step 1:
42 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 42

Going ahead to step 2:
When dividing 53 by 42, we get 1 with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 42 away from 53, we end up with 11.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 42

Moving on to step 3:
112 divided by 42 is 2 with a remainder of 28.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 84 from 112 to get 28.
Grab the next digit (1) from the dividend, add it to 28, then carry on: 281 / 42

On to step 4:
The number 42 fits into 281 6 times, leaving a remainder of 29.
Put 6 as the next digit of the answer. 
Result so far: 126.0
Subtract 252 from 281 to get 29.
Take the next digit (3) from the dividend and append it to 29, then repeat: 293 / 42

Moving on to step 5:
293 divided by 42 is 6 with a remainder of 41.
The next digit of our result is 6. 
Result so far: 1266.0
If we take 252 away from 293, we end up with 41.
Fetch the next digit (2) from the dividend, attach it to 41 and continue: 412 / 42

Step 6:
412 divided by 42 is 9 with a remainder of 34.
The next digit of our result is 9. 
Result so far: 12669.0
The remainder is 34 after subtracting 378 from 412.
Bring next digit (8) of the dividend behind the 34 and repeat the process: 348 / 42

Let's proceed to step 7:
The number 42 fits into 348 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 126698.0
If we subtract 336 from 348, we get 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 42

Moving on to step 8:
42 can be fit into 121 2 times, resulting in a remainder of 37.
Put 2 as the next digit of the answer. 
Result so far: 1266982.0
Deduct 84 from 121 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 9:
When dividing 370 by 42, we get 8 with a remainder of 34.
The next digit of our result is 8. 
Result so far: 1266982.8
If we subtract 336 from 370, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
If we divide 340 by 42, we get 8 and a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 1266982.88
Deduct 336 from 340 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 1266982.88, and the remainder is 0.004.